import java.io.*;
import java.util.Scanner;

public class Demo16 {
    public static void main(String[] args) throws IOException {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入源文件路径：");
        String srcPath = scanner.next();
        File srcFile = new File(srcPath);
        if(!srcFile.isFile()){
            System.out.println("源文件路径有误！");
            return;
        }
        System.out.println("请输入目标文件路径");
        String destPath = scanner.next();
        File destFile = new File(destPath);
        if(!destFile.getParentFile().isDirectory()) {
            System.out.println("输入的目标文件路径有误！");
            return;
        }

        try(InputStream inputStream = new FileInputStream(srcFile);
            OutputStream outputStream = new FileOutputStream(destFile)){
            while (true) {
                byte[] buffer = new byte[1024];
                int n = inputStream.read(buffer);
                if(n == -1){
                    break;
                }
                outputStream.write(buffer,0,n);
            }
        }catch (IOException e){
            e.printStackTrace();
        }
    }
}
